I chose this as Photo of the Week because it fits the tools theme, and the scale of the points is extraordinary. If I were digging the site I’d be cheerfully trowelling away these without noticing them. Even if someone said “Hey! What the hell do you think you’re doing?” and pointed them out to me, I still think I’d be missing a lot of them. The other reason is that it gives me a chance to plug his blog at Old Dirt – New thoughts, where you can currently follow a dig in Minnesota.